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첨단연성물질 연구단
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Layering transitions and metastable structures of cholesteric liquid crystals in cylindrical confinement

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Title
Layering transitions and metastable structures of cholesteric liquid crystals in cylindrical confinement
Author(s)
Eun, Jonghee; Pollard, Joseph; Sung-Jo Kim; Machon, Thomas; Jeong, Joonwoo
Publication Date
2021-08
Journal
Proceedings of the National Academy of Sciences of the United States of America, v.118, no.33
Publisher
National Academy of Sciences
Abstract
© 2021 National Academy of Sciences. All rights reserved.Our study of cholesteric lyotropic chromonic liquid crystals in cylindrical confinement reveals the topological aspects of cholesteric liquid crystals. The double-twist configurations we observe exhibit discontinuous layering transitions, domain formation, metastability, and chiral point defects as the concentration of chiral dopant is varied. We demonstrate that these distinct layer states can be distinguished by chiral topological invariants. We show that changes in the layer structure give rise to a chiral soliton similar to a toron, comprising a metastable pair of chiral point defects. Through the applicability of the invariants we describe to general systems, our work has broad relevance to the study of chiral materials.
URI
https://pr.ibs.re.kr/handle/8788114/10440
DOI
10.1073/pnas.2102926118
ISSN
0027-8424
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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